/*
 * Copyright 2020 lcnap
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package pers.lcnap.simplerpc.rpc.handler.codec;

import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.handler.codec.MessageToByteEncoder;
import pers.lcnap.RpcRequest;
import pers.lcnap.simplerpc.util.KryoUtil;

/**
 * {@link RpcRequest} 编码器，将对象序列化二进制数据。
 * {@link ByteToRpcRequestDecoder} 解码器
 *
 * @see State
 */
public class RpcRequestToByteEncoder extends MessageToByteEncoder<RpcRequest> {
    @Override
    protected void encode(ChannelHandlerContext ctx, RpcRequest msg, ByteBuf out) throws Exception {
        byte[] write = KryoUtil.write(msg);
        out.writeInt(write.length);
        out.writeBytes(write);
    }
}
